Z71 Factory-verified

Chevrolet · Regular Production Option

Chassis package, off road

Years 1983–09, 2014–27 Models 24 Factory citations 123

Also described as Chassis package, off-roadChassis equipment, off-road packageSuspension package, off-roadZ71 Off-Road PackageOff-road chassis package (Z71)Off-road suspension packageZ71 package, off-road

Also documented for Cadillac GMC

Documented applications

Avalanche — GMT800 (2002–2006)

2002–2006 Factory-verified

GM factory document — 2002 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet avalanche 2wd rpo code list, p.1.
GM Heritage factory kit — 2002 Chevrolet Avalanche, p.58.
GM Heritage factory kit — 2003 Chevrolet Avalanche, p.38.
GM Heritage factory kit — 2005 Chevrolet Avalanche, p.37.

Avalanche — GMT900 (2007–2013)

2007–2009 Factory-verified

GM factory document — 2007 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet avalanche 2wd rpo code list, p.1.

Blazer (full-size, K Blazer) — GMT400 (1992–1994)

1992 Factory-verified

includes NZZ skid plates and 46 mm high pressure gas shocks; requires QIX or QIY tires; the 1993 pages print 771 and 271 and the 1994 pages 271, so those years are left out

GM Heritage factory kit — 1992 Chevrolet Blazer, p.14.

S-10 Blazer — First generation (1983–1994)

1984–1987 Factory-verified

only in: 4WD; QEB tires, ZK5 spare, special torsion bars and shocks, V76 tow hooks and NY7 shield; the 1983 and 1988 option pages print the code as 271

GM Heritage factory kit — 1984 Chevrolet S 10 Blazer, p.21.
GM Heritage factory kit — 1985 Chevrolet S 10 Blazer, p.30.
GM Heritage factory kit — 1986 Chevrolet S 10 Blazer, p.16.
GM Heritage factory kit — 1987 Chevrolet S 10 Blazer, p.14.

C/K pickup — GMT400 (1988–2000)

1988–1994, 1996–2000 Factory-verified

the 1988, 1989 and 1997 kit citations print the code only inside another option's cross-reference (no defining line found)

GM factory document — 1998 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM factory document — 2000 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM Heritage factory kit — 1988 Chevrolet Truck, p.141.
GM Heritage factory kit — 1989 Chevrolet Truck, p.33.
GM Heritage factory kit — 1990 Chevrolet Truck, p.23.
GM Heritage factory kit — 1991 Chevrolet Truck, p.36.
GM Heritage factory kit — 1992 Chevrolet Truck, p.34.
GM Heritage factory kit — 1993 Chevrolet Truck, p.14.
GM Heritage factory kit — 1994 Chevrolet Truck, p.23.
GM Heritage factory kit — 1996 Chevrolet Truck, p.60.
GM Heritage factory kit — 1997 Chevrolet Truck, p.25.

Colorado — Second generation (GMT31XX) (2015–2022)

2015–2019, 2021–2022 Factory-verified

2015: Z71: S; Base, WT, LT: not offered; the upfitter lists name it chassis package, "off road"; 2018 from GM's 2018 Colorado order guide (PDF); 2021 from the upfitter list GM files for 2021 and 2022

GM factory document — 2015 chevrolet colorado fleet order guide wayback, p.4.
GM factory document — 2016 chevrolet canyon colorado electrical body builders manual service manual 2016 en us, p.15.
GM factory document — 2017 chevrolet canyon colorado electrical body builders manual service manual 2017 en us, p.20.
GM factory document — 2019 chevrolet 19 coloradocanyon body builder sm u 2018aug01 1, p.14.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.14.
GM factory document — 2018 chevrolet colorado order guide copy gm authority, p.1.

Colorado — GMT355 (2004–2012)

2004–2009 Factory-verified

GM factory document — 2004 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet colorado pickup 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet colorado pickup 2wd rpo code list, p.1.
GM Heritage factory kit — 2004 Chevrolet Colorado, p.15.
GM Heritage factory kit — 2005 Chevrolet Colorado, p.101.

S-10 pickup — First generation (1982–1993)

1983–1985, 1987–1988 Factory-verified

only in: 4WD; the 1983–1987 option lines print the code as 271, so 1983–1985 and 1987 come from the N90 wheel price lines with Z71 (1984 prints Z7i); discontinued for 1989 (the 1989 what's-new page)

GM Heritage factory kit — 1983 Chevrolet S 10, p.28.
GM Heritage factory kit — 1984 Chevrolet S 10, p.21.
GM Heritage factory kit — 1985 Chevrolet S 10, p.27.
GM Heritage factory kit — 1987 Chevrolet S 10, p.25.
GM Heritage factory kit — 1988 Chevrolet S 10, p.19.

Silverado 1500 — Fifth generation (2027)

2027 Factory-verified

the RPO list prints "Suspension Package, Off-Road"; includes JHD, NZZ

GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide, p.11.

Silverado — GMT800 (1999–2007)

1999–2007 Factory-verified

GM factory document — 1999 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet silverado classic 2wd rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Truck and Silverado, p.60.
GM Heritage factory kit — 2007 Chevrolet Silverado, p.58.

Silverado — GMT900 (2007–2013)

2009 Factory-verified

GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Silverado HD — GMT900 (2007–2014)

2009 Factory-verified

GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Silverado HD — K2XX (2015–2019)

2016–2019 Factory-verified

4WD only; twin tube Rancho shocks, hill descent control (JHD), underbody shields (NZZ) and Z71 badging and decals; 2017: GM's 2017 Silverado 2500HD order guide; 2018: GM's 2018 Silverado 2500HD order guide; 2019: GM's 2019 Silverado 2500HD order guide

GM factory document — 2016 chevrolet silverado 2500hd fleet order guide wayback, p.3.
GM factory document — 2017 chevrolet silverado 2500hd order guide revised august 12 2016 copy gm authority, p.19.
GM factory document — 2018 chevrolet silverado 2500hd order guide copy gm authority, p.28.
GM factory document — 2019 chevrolet silverado 2500hd order guide april 20 2018 iteration 2 copy gm authority, p.26.

Silverado HD (T1XX, 2020–2027)

2023, 2025–2027 Factory-verified

only in: 2500 HD, 3500 HD

GM factory document — 2023 chevrolet 23silverado 2500 3500hd electrical body builder sm en us 2022oct12, p.15.
GM factory document — 2025 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.

Silverado — K2XX (2014–2019)

2015–2019 Factory-verified

2016: GM Authority's 2016 RPO-level changes.

GM factory document — 2015 chevrolet silverado 1500 fleet order guide wayback, p.1.
GM factory document — 2017 chevrolet sierra silverado electrical body builders manual service manual 2017 en us, p.39.
GM factory document — 2018 chevrolet silverado 1500 fleet order guide copy gm authority, p.18, p.218.
GM factory document — 2019 chevrolet silverado 1500 ld double cab fleet order guide copy gm authority, p.6, p.50.

Silverado — T1XX (2019–2026)

2020, 2022–2026 Factory-verified

the 2020 list reads "Z71 Off-Road Package"; the 2025–2026 lists read "Suspension Package, Off-Road";

GM factory document — 2020 chevrolet silverado 1500 fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet 22 silverado 1500 new electrical body builder 042822, p.15.
GM factory document — 2023 chevrolet 23 silverado 1500 electrical body builder sm en us 2022oct24, p.16.
GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.19.
GM factory document — 2025 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

Suburban — GMT400 (1992–1999)

1998–1999 Factory-verified

GM factory document — 1998 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet chevy suburban 2wd rpo code list, p.1.

Suburban — GMT800 (2000–2006)

2000–2006 Factory-verified

the 2000 list words it as off road suspension

GM factory document — 2000 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2001 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet chevy suburban 2wd rpo code list, p.1.
GM Heritage factory kit — 2002 Chevrolet Suburban, p.41.
GM Heritage factory kit — 2003 Chevrolet Suburban, p.142.
GM Heritage factory kit — 2004 Chevrolet Suburban, p.45.
GM Heritage factory kit — 2005 Chevrolet Suburban, p.133.

Suburban — GMT900 (2007–2014)

2007–2009, 2014 Factory-verified

Trim marks in the 2014 guide: LT: O.

GM factory document — 2007 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2014 chevrolet suburban fleet order guide wayback, p.4.

Suburban — K2XX (2015–2020)

2015–2019 Factory-verified

only in: 4WD; LT: A; LS, LTZ: not available; 2015: requires PCK; includes the Z71 suspension, skid plates, grille and trim, RCV wheels, RBX tires, T3U, UD5, GU6, NQH, JHD and K47; the lists read chassis package, off road; 2018–2019 from GM's 2018 and 2019 Suburban order guides (GM Authority copies)

GM factory document — 2015 chevrolet suburban fleet order guide wayback, p.3, p.4.
GM factory document — 2016 chevrolet suburban fleet order guide wayback, p.4.
GM factory document — 2016 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2016 en us, p.19.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.39.
GM factory document — 2018 chevrolet suburban order guide copy gm authority, p.29.
GM factory document — 2019 chevrolet suburban order guide copy gm authority, p.30.

Tahoe — GMT400 (1995–1999)

1995–1999 Factory-verified

GM factory document — 1998 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet tahoe 2wd rpo code list, p.1.
GM Heritage factory kit — 1995 Chevrolet Tahoe, p.4.
GM Heritage factory kit — 1996 Chevrolet Tahoe, p.18.
GM Heritage factory kit — 1997 Chevrolet Tahoe, p.34.
GM Heritage factory kit — 1999 Chevrolet Tahoe, p.15.

Tahoe — GMT800 (2000–2006)

2000–2006 Factory-verified

the 2000 list words it as off road suspension

GM factory document — 2000 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2001 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet tahoe 2wd rpo code list, p.1.
GM Heritage factory kit — 2002 Chevrolet Tahoe, p.34.
GM Heritage factory kit — 2003 Chevrolet Tahoe, p.34.
GM Heritage factory kit — 2005 Chevrolet Tahoe, p.109.
GM Heritage factory kit — 2006 Chevrolet Tahoe, p.111.

Tahoe — GMT900 (2007–2014)

2007–2009 Factory-verified

GM factory document — 2007 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet tahoe 2wd rpo code list, p.1.
GM Heritage factory kit — 2007 Chevrolet Tahoe, p.31.

Tahoe — K2XX (2015–2020)

2015–2019 Factory-verified

only in: 4WD; LT: A; LS, LTZ: not available; includes the Z71 suspension, skid plates, grille and trim, RCV wheels, RBX tires, T3U, UD5, GU6, NQH, JHD and K47; 2015: not with TUF or the LPO wheels; the lists read chassis package, off road; 2018–2019 from GM's 2018 and 2019 Tahoe order guides (GM Authority copies)

GM factory document — 2015 chevrolet tahoe fleet order guide wayback, p.5.
GM factory document — 2016 chevrolet tahoe fleet order guide wayback, p.4.
GM factory document — 2016 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2016 en us, p.19.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.39.
GM factory document — 2018 chevrolet tahoe order guide copy gm authority, p.30.
GM factory document — 2019 chevrolet tahoe order guide copy gm authority, p.31.

This page aggregates every documented appearance of Z71 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.